General information

It is advisable wherever possible to use the taxon name (species name) to make your API calls, rather than using IDs. IDs are not immovable are expected to be used mainly by organisations that work closely with the IUCN Red List.

This API now supports querying regional assessments in addition to global assessments. This can achieved by appending a region_identifier parameter to the desired endpoint. Please see specific documentation for further details.

Synonyms by name

Can be used to either gain information about synonyms via an accepted species name, or vice versa i.e. this call tells you if there are synonyms for the species name, or whether it's a synonym of an accepted name

Linking to the Red List website

Please use the end-points/ API calls below to link the IUCN Red List website, as we can then make sure that if the website links are changing, this will not affect your application.

NOTE: If you are linking to the Red List website directly, then you need to make sure that your application is updated accordingly!

Red List website link

To obtain the direct link of the species on the Red List website - please don't use this link in a document/report/publication as the species ID might change, and therefore will invalidate the link if used as such:

Red List website redirect

To be redirected to the Red List website page for this species, please use this method. This method is to be used if you want to include a link to a species page in a report or publication. This then makes sure that if internal IDs for the species are changing, it will not affect your report:

Red List website redirect for Species ID

To be redirected to the Red List website page for this species, based on its ID, please use this method. This method is to be used if you want to include a link to a species page in a report or publication. This then makes sure that if internal URLs for the species are changing, it will not affect your report: